A blood test is a laboratory analysis performed on a blood sample that is usually extracted from a vein in the arm using a needle, or via fingerprick. Multiple tests for specific blood components (such as a glucose test or a cholesterol test) are often grouped together into one test panel called a blood panel or blood work.
Upper Air Troughs. When the height contours bend strongly to the south, (as in the diagram below), it is called a TROUGH. Strong troughs are typically preceded by stormy weather and colder air at the surface. Here is an example of a trough in an upper-level height field (red contours).
Upper and Lower Egypt. Upper and Lower Egypt also referred to as The Two Lands is a name used for Ancient Egypt. The concept appears in titles of Egyptian Kings and Queens and appears in scenes in temple, tombs and the pyramids. The concept also refers to an innate sense of duality in the Ancient Egyptian culture.